Metal signs with lights add a ton of character to any party or home decoration. One of our customers replaced the lights in the above rustic yard "Wine" sign using G30 white (clear or transparent) bulbs. These round bulbs are just a little smaller than a ping pong ball and work really well in medium sized metal letters.
We also recommend the traditionally shaped C7 or C9 bulbs. Choice of style and size is a matter of taste and the size and style of the letters.
Check the paperwork or any labels on your metal letter or keep in mind that an E12 socket is the same size as a standard night light. A C9 bulb with an E17 base is just a little larger.
Round bulbs come in G30, G40, G50 sizes. See them in LED and incandescent. (That would be a huge sign if you used a G50!).
Here's a video to give you an idea of their relative dimensions:
If you've got a great metal sign with lights, share it with us.
We love to see your creativity!